900-999 Geography & history
900-909 Geography & history
910-919 Geography & travel
920-929 Biography, genealogy, insignia
930-939 History of ancient world
940-949 General history of Europe
950-959 General history of Asia Far East
960-969 General history of Africa
970-979 General history of North America
980-989 General history of South America
990-999 General history of other areas